11 results
Hypernatremia Differential Diagnosis Algorithm - Diabetes Insipidus Workup

Step #1 - Consider the history
Step #2 - Assess
Hypernatremia Differential ... history Step #2 ... & desmopressin test ... Management #Algorithm #Sodium ... #nephrology #insipidus
Diabetes Insipidus - Diagnosis Algorithm
Tests:
 • Osmolality, Urine AND/OR
 • Osmolality, Serum or Plasma AND
 •
Diabetes Insipidus ... Diagnosis Algorithm Tests ... Plasma AND • Sodium ... Osmolality, Urine 1-2 ... #differential
Inherited Defects in Kidney Tubule Epithelial Cells

Renal glucosuria - Na+-dependent glucose cotransporter
Cystinuria - Amino acid transporter
Bartter
cell epithelial sodium ... of epithelial sodium ... Nephrogenic diabetes insipidus ... Defects #Kidney #Nephrology ... #Diagnosis #Differential
Hypernatremia - Differential Diagnosis Workup Algorithm

1) Check Urine Osmolality:
 > 600 mOsm/kg - Implies extrarenal mechanism
Hypernatremia - Differential ... renal mechanism 2) ... Euvolemic: Diabetes insipidus ... Workup #Algorithm #nephrology ... #sodium
Giant cell arteritis (GCA)

Giant cell arteritis (GCA) definition: Most common systemic inflammatory vasculitis in older adults
with systemic, neurologic ... Involves large and medium ... very remarkable w/differential ... women and age/2 ... the “Chewing gum test
Hypernatremia - Differential Diagnosis and Treatment
Hypernatremia is almost always due to unreplaced water loss (free water
The differential ... , Dehydration: neurologic ... water unavailable 2) ... post-obstructive 3) Diabetes Insipidus ... #sodium
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
Petechial Rash - Differential ... areas (less than 2 ... RA, Sjogren's, GPA ... Fecal occult blood test ... • Serology for
Primary Polydipsia
Definition: Excessive volitional water intake
Epidemiology:
 • 6-20% of patients with psychiatric disorders - Most commonly
occurs in only 2- ... Differential Diagnosis ... : Diabetes Insipidus ... Urine Osm, Serum Sodium ... , Urine Sodium
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
Vasculitides - Differential ... and branches • GCA ... ear disease Differential ... retinopathy Lab Tests ... vasculitis) - 2
Urine chemistry tests for the diagnostic evaluation of a patient with polyuria
UOsm <100 mOsm/Kg (H2O diuresis)
Urine chemistry tests ... polydipsia • Diabetes insipidus ... 300 mOsm/Kg • 2 ... #polyuria #differential ... #diagnosis #nephrology